package com.example.lotterysystem.service.impl;

import com.example.lotterysystem.common.errorcode.ServiceErrorCodeConstants;
import com.example.lotterysystem.common.exception.ServiceException;
import com.example.lotterysystem.common.utils.*;
import com.example.lotterysystem.service.VerificationCodeService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.HashMap;
import java.util.Map;

@Service
public class VerificationCodeServiceImpl implements VerificationCodeService {
    // 对于redis里的key需要标准化：为了区分业务，应该给key定义前缀：VerificationCode_phoneNumber、User_phoneNumber
    private static final String VERIFICATION_CODE_PREFIX = "VERIFICATION_CODE_";
    private static final Long VERIFICATION_CODE_TIMEOUT = 60L;
    private static final String VERIFICATION_CODE_TEMPLATE_CODE = "SMS_479115064";

    @Autowired
    private SMSUtil smsUtil;

    @Autowired
    private RedisUtil redisUtil;

    @Override
    public void sendVerification(String phoneNumber) {

        //校验手机号
        if(!RegexUtil.checkMobile(phoneNumber)) {
            throw new ServiceException(ServiceErrorCodeConstants.REGISTER_PHONE_NUMBER_ERROR);
        }

        //生成随机验证码
        String code = CaptchaUtil.getCaptcha(4);

        //发送验证码
        Map<String ,String > map = new HashMap<>();
        map.put("code", code);
        smsUtil.sendMessage(
                VERIFICATION_CODE_TEMPLATE_CODE
                , phoneNumber
                , JacksonUtil.writeValueAsString(map)
        );

        //缓存验证码
        redisUtil.set(VERIFICATION_CODE_PREFIX + phoneNumber, code, VERIFICATION_CODE_TIMEOUT);
    }

    @Override
    public String getVerificationCode(String phoneNumber) {
        //校验手机号
        if(!RegexUtil.checkMobile(phoneNumber)) {
            throw new ServiceException(ServiceErrorCodeConstants.REGISTER_PHONE_NUMBER_ERROR);
        }
        return redisUtil.get(VERIFICATION_CODE_PREFIX + phoneNumber);
    }
}
